Endovascular treatment strategy according to the Spetzler-Martin classification
| Treatment strategy | Spetzler-Martin classification | |||
| 1 | 2 | 3 | ||
| Single arterial | 8 | 8 | 1 | 17 (23.3%) |
| Single venous | 2 | 14 | 0 | 16 (21.9%) |
| Multiple arterial | 6 | 24 | 0 | 30 (41.1%) |
| Arterial and venous | 0 | 10 | 0 | 10 (13.7%) |
| 16 (21.9%) | 56 (76.7%) | 1 (1.4%) | 73 | |
*Χ2=14.027, df 6, significance level p=0.0293, contingency coefficient 0.401.